Solved

TextStream: move back to top of file?

Posted on 2002-05-29
10
258 Views
Last Modified: 2008-02-01
Is there a method I can use to move to the top of a text file when reading? Or do I need to use a different object?

Thanks!
0
Comment
Question by:SuperMario
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
  • 2
  • +1
10 Comments
 
LVL 5

Accepted Solution

by:
raizon earned 50 total points
ID: 7042332
Only way I know of using the TextStream Object would be to close the file and destroy the object then re open it.  This will put you back at the beginning of the file.  However it doesn't seem to efficient to me.

0
 
LVL 3

Author Comment

by:SuperMario
ID: 7042335
Me either... I have restructured my code a little bit.. but thanks anyway :)
0
 
LVL 5

Expert Comment

by:raizon
ID: 7042354
Did you use the textstreamobject or go a different route?
0
Salesforce Has Never Been Easier

Improve and reinforce salesforce training & adoption using WalkMe's digital adoption platform. Start saving on costly employee training by creating fast intuitive Walk-Thrus for Salesforce. Claim your Free Account Now

 
LVL 16

Expert Comment

by:Richie_Simonetti
ID: 7042584
what do you mean by "top of a text file when reading"?
0
 
LVL 3

Author Comment

by:SuperMario
ID: 7042801
I went a different route, actually... I was reading in line by line initially and needed to return to the initial state for another function. I ended up writing it in the same piece of code.
0
 
LVL 2

Expert Comment

by:Crin
ID: 7042824
You can use following:

FileNum = FreeFile(0)
Open "File.txt" For Random As FileNum Len = 1

And then take text from any position using:

Get FileNum, CurFilePos + i, curchar

However, this require to rewrite LineInput function which is very simple, say if you need help here.

Sincerely,
Crin


0
 
LVL 16

Expert Comment

by:Richie_Simonetti
ID: 7042827
Then, problem was solved by yourself using different approach?
0
 
LVL 2

Expert Comment

by:Crin
ID: 7042839
Sorry, posted comment without enough explanations.

Get FileNum, CurFilePos, curchar

This line will read ONE symbol into curchar variable taken from CurFilePos position.

public Function CustomLineInput(CurFilePos as long) as string
Dim Result as string, curchar as String * 1, i as long

Result = ""
curchar = ""
i = 0

Do
  Get FileNum, CurFilePos + i, curchar
  if curchar <> chr(13) and curchar <> chr(10) then
    Result = Result & curchar
  end if
Loop Until curchar = chr(13) and CurFilePos + i < LOF(FileNum)

CustomLineInput = Result

End Function

Now you just need to maintain CurFilePos right way.

Sincerely,
Crin
0
 
LVL 2

Expert Comment

by:Crin
ID: 7042844
It is night here, so some typos coming...

Loop Until curchar = chr(13) and CurFilePos + i < LOF(FileNum)

should be:

Loop Until curchar = chr(13) or CurFilePos + i = LOF(FileNum)

Sincerely,
Crin

0
 
LVL 5

Expert Comment

by:raizon
ID: 7042925
yes I believe that SuperMario did solve this on thier own by using a different approach.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I was working on a PowerPoint add-in the other day and a client asked me "can you implement a feature which processes a chart when it's pasted into a slide from another deck?". It got me wondering how to hook into built-in ribbon events in Office.
Since upgrading to Office 2013 or higher installing the Smart Indenter addin will fail. This article will explain how to install it so it will work regardless of the Office version installed.
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question